FindPNG
Find libpng, the official reference library for the PNG image format.
Imported targets
This module defines the following IMPORTED target:
- PNG::PNG
- The libpng library, if found.
Result variables
This module will set the following variables in your project:
- PNG_INCLUDE_DIRS
- where to find png.h, etc.
- PNG_LIBRARIES
- the libraries to link against to use PNG.
- PNG_DEFINITIONS
- You should add_definitions(${PNG_DEFINITIONS}) before compiling code
that includes png library files.
- PNG_FOUND
- If false, do not try to use PNG.
- PNG_VERSION_STRING
- the version of the PNG library found (since CMake 2.8.8)
Obsolete variables
The following variables may also be set, for backwards compatibility:
- PNG_LIBRARY
- where to find the PNG library.
- PNG_INCLUDE_DIR
- where to find the PNG headers (same as PNG_INCLUDE_DIRS)
Since PNG depends on the ZLib compression library, none of the above
will be defined unless ZLib can be found.